rosner



R. RSNER.

IGNITER.

APPLICATION FILED APR. 24, 19m.

1 ,332.,758. I Patented Mar. 2, 1920..

2 SHEETS-SHEET l.

, zewczazf power' M965:

vR. ROSNER.-

vIGNITER. APPLICATION FILED APR. 24. l9ll8.

, Patented Mar.2,1920.

2 SHEETS-SHEET 2 UNITED sTATEs PATENT oEErcE.

RUDOLF ROSNER, OF CHICAGO, ILLINOIS, ASSIGNOR TO CARTER-LONG MAGNETO COMPANY, 0F WAUKEGAN, ILLINOIS, A CORPORATION OF ILLINOIS.

IGN ITER.

Speciiication of Letters Patent.

Patented Mar. 2,1920.

Application led April 24, 1918. Serial No. 230,429.

To 'all whom t may concern:

i Be it known that I, RUDOLF RosNER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Igniters, of. which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved construction of an igniter or sparkproducer for an internal combustion engine. It consists principally in the improvements in the construction of the parts constituting the interrupter and distributer shown and described as set out inv the claims.

In the drawings:

Figure 1 is an axial section of a magneto embodying this invention.

Fig. 2 is a section at the line, 2 2, on Fig. 1.

Fig. 3 is a section at the line, 3 3, on Fig. l.

Fig. 4 is a detail section at line 4 4, on

F ig. 2.

Fig.-5 is a section at line, 5 5, on Fig. 3. Fig. 6 is a top plan view of the distributer. Fig. 7 is a diagram of the electric circuits. Fig. 8 is a detail similar to Fig. 4, showing a modified construction f one of the posts in the circuit.

In the construction shown in the drawings, 1 is the casing of insulating material, having a diaphragm or head, 2, of like material, below which are mounted in thecasing the primary coil, 3, the secondary coil, 4, the core, 5, which is axially hollow to admit the shaft, 6, which is of brass having at its lowerv end the steel coupling, 7, for connection with means for rotating it. The head,`2, has mounted in it a shaft-bearing member, 8, which affords bearing at 8-a for the shaft, and above said bearing has its cavity enlarged as seen at 8", to form an oil cup, said enlarged portion projecting above the insulating head, 2, and adapted to receive eXteriorly the sleeve, 10, fitting loosely thereabout for rotation, and eXteriorly formed as a cam, 10, for operating the interrupter. 11 is a collar driven fast oii`"the shaft and counter-bored taperingly at its upper end portion which projects above the shaft and split at that portion and interiorly threaded, and provided with an expanding screw, 12. The upper end portion of the sleeve member, 10, has its inner diameter such as to adapt it to be passed onto the upper end of the collar, 11, before the same is expanded, and to' be held' tightly thereon by expanding of said upper end portion of the collar. Said sleeve has about midway between its ends, that is t0 say, at the upper end of the cam portion, 10a, an angle-shaped flange, 10, which forms an upwardly-open annular cup or channel encompassing the sleeve. Said upper-end portion of the sleeve A is mutilated or cut away at one side as shown at 10d, rendering it non-circular and thereby adapted to receive and rotate the distributer, 13, whose central aperture is similarly shaped to adapt it to pass onto said mutilated collar. From the inner corner of the channel formed by theI angle fiange, 10, oil ducts, '10", are bored into the interior of the sleeve, leading 'thereby `into the oil cup formed at 8b, as above described. .The distributer, 13, is provided at its lowerl side with an annular flange, 13a, which depends in the annular cup described and operates to close the upper mouths of the oil duct; and the entire construction at this point is adapted, first, to provide convenient access for filling the oil cup, and, second, to prevent .and the contact terminal, 15", of said interrupter lever toward the contact terminal, 19", mounted upon the bracket, 19, which is mounted upon the inside of the casing and secured thereto with the binding post, 19, Y

to which the circuit wire from one pole of the battery for energizing the primary coil is secured. 'lhe interrupter lever has mounted upon it intermediate its ends an abutment consisting of an insulating roll, 15, for encounter of the cam. One end of the primary coil wire is grounded on the frame asdiagrammatically indicated at i on Fig. 7. rll`he other end of' the primary coil wire is connected as indicated at 17 b, to the base of a post, 17a, with which the inter-y rupter lever mountl or bracket, 16, is provided, situated at a short distance from the pivot post, and electrically connected through the condenser, 88, with the bracket, 19. The two posts, 17 and 17a, are each provided at their upper ends with annular grooves, 17 and 17d, and lthere is provided a bridge piece 20, for connecting the posts #above the interrupter, said bridge piece having notches, 20* and 201,1for engaging the annular grooves at the upper ends of the posts, 17 and 17, respectively, said two notches being preferably in directionsl transverse to each other so that the bridge piece having been rst engaged with one of the posts, as the post, 17, by a longitudinal thrust,-the notch for that engagement -being in the end of the bridge piece,-may be engaged with the other post by swinging about the engagement already made'with the first `post to engage the transversely- -extending notch with the groove of said post, 17?. It will be understood that the fork fingers or prongs formed by the notches mentioned inthe bridge piece may -be slightly distorted so as to cause the resiliency of the said forkvingers toproduce a suiliciently effective frictional engagement with the annular grooves of the post to cause the bridge piece to be securely retained when it has been put in place. For positioning andretaining the spring, 18, which reacts upon the interrupter lever for holding it toward the cam and closing the circuit at the proper position of the cam, there is provided a guide pin, 21, which is mounted loosely both in the interrupter lever and in the abutment, 16?, against which the spring is stopped at the opposite end. For' convenience in assembling without the use of tools and causing the guide pin and spring to be safely retained after they are once assembled, the guide pin has a cross pin, 21a, which enters a slot in the abutment, 16, and on the guide pin, 21, there is placed a washer, 22, against which the spring bears for being stopped by the abutment. The spring being first lodged on the pin, the end of the pin protruding from the Spring, is inserted through the aperture provided for its engagement with the inter, rupter lever, and the inserted end of the pin is thrust back through said aperture until the other end of the pin can enter the seat provided for it inthe abutment, and it is then thrust in the opposite direction for carrying the cross pin, 21, into the slot, 161. The pin,'21, thus holds the spring positioned properly between the interrupter lever and the abutment to cause its reaction upon the interrupter lever as desired. rllhe washer, 22, is of cushioning and insulating material, and so prevents the spring from forming a part of the circuit, and also diminishes the liability to crystallization of the spring. A

lt will be recognized that the construction above described in detail permits the assembling and disassembling of the parts constituting the int-errupter and its mount, and the distributer without the use of any tools except a screw driver to withdraw the expanding screw from the end of the collar,

1'1. Instead of merely forming an annular groove in the upper end of the post 17, as described, for engagement of the bridge piece, 20, such groove may be produced in effect by boring the post from the lower end to the top and continuing the bore reduced in diameter through the upper end, and inserting down through the central aperture a headed plunger, 17 e, around which within the larger portion of the bore there is lodged a coiled spring, 17 f, stopped at its lower end by a washer, 17g, which is forced on the lower end of the plunger and retained thereon by expanding the s ightly-protruding end portion of the plunger below the washer, forming small ,lins, 17 h, so that the spring holds the plunger depressed inthe post until its head is stopped upon the top of the latter, said head having its under side tapered to form a conical shoulder which coperates with the upper end of the post to produce substanhaving an annular groove used in the claims. .l

One end of the secondary coil wire extends to a contact pin, 25, which is mounted in the diaphragm or head, 2, and is provided with a spring, 25", operating with a tendency to thrust the pin upward for contact of its expanded head, 25, with the exposed end of a conducting wire, 26, which is embedded in the cover, 27, of t-he casing, said embedded wire extending to the center of the cover and there being Vin contact with inner end of the spring, 28, which reacts upon the central contact pin, 29, which is thereby protruded at the center of the cup for contact with the conducting piece, 30, mounted upon the distributer, 13, and extending from a point over the center of the and having mounted in it at said end, a1 foregoing,

spring-protruded contact button, 37, whose expanded head, 37a, .is carried in contact with the inner or under surface of the top of the cover in the rotation of the distributer with the shaft.

Mounted in said cover top are contact posts, 30", one for each spark .plug 30a (Fig. 7) which is to be connected with the igniter, that is, one for each cylinder of the engine to be served, said Contact posts bein exteriorly constructed as binding posts or receiving the wires, and interiorly having their ends Hush withthe'inner surface of the cover, which properly positions them for rubbing contact with the head 37a, of the contact button, 37, as the distributer revolves. V

The cover, 27, is arranged to be-secured `to the casing by means of two`snap catches,

3l, 31, and in order to insure the proper V'positioning of the cover on the casing, these two snap catches are positioned on the casing so 'as not to be diametrically opposite to each other so th-at they ycannot both be engaged unless the cover is correctly positioned with respect to the case, and the user will thereby be informed when the cover is .mispositioned For engaging the catches,

bosses, 32, 32, are formed at proper positions not directly opposite each other atthe lower edge of the cover, having notches toreceive the engaging ends of the catches, and sloped from both ends to the edge of the notch for deflecting the catch nose preparatory to its snapping into the notch.

The condenser which may be located at any convenient position within the casing is conventionally represented at 38.

In Fig. 7 which is a diagram of the -several electric circuits, 33 represents the ground which is to be understood as the frame of an engine upon 'which this device is to be mounted, by means of a non-insulated metal bracket, 1%, said bracket affording means for connecting within the casing the lower terminals of the coils, 3 and 4, said terminals'indicated at 34and 35. At 36 is indicated the grounded side of the energizing battery, 37. The other parts shown in this diagram are denoted by reference numerals as in the other figures.

l. In an igniter, in combination with an insulating casing, primary coil and primary circuit comprising a conducting post carried by the casing; an interrupter lever and a fulcrum post therefor supported on the casing, and a bridge-.piece from 'said binding post to said fulcrum post, said fulcrum post and bridge-piece being constructed for disengageably interlocking with each other for retaining the interrupter lever on the fulcrum post.

2. In a structure such as set out in claim the bridge-piece being engaged with the fulcrum post at a point thereon immediately adjacent to the lever and byl said engagement held in contact Awith the lever.

3. In a construction such as set out in claim 1, said posts having each an annular groove near the upper end, and the bridgepiece having notches for engaging the groove extending in directions transverse to each other. Y l t 4. In an igniter in combination with .an insulating casing, primary coil and circuit, an interrupterlever fulcrumed at one end `and moving at the opposite end for opening and closing the circuit and having inter- 8 mediate its ends an insulating abutment; an interrupter cam on the interrupter shaft encountering said abutment, and a spring which holds the interrupter lever against the cam reacting on saidlever at the end remote from the fulcrum; whereby a spring of minimum resistance may .be employed.

5. In a structure such as set out in claim 4 foregoing, a support for the interrupter lever fulcrum, a fixed conducting post in the circuit and a conducting bridge from such post to the lever fulcrum, said support having lan abutment stopping the spring opposite the lever, and a seat for the spring on the abutment formed of insulating' material, whereby the circuit is completed without including the spring therein.

6. In an igniter, in combination with a casing, the primary andA secondary coils and a hollow core therein, a shaft extending axially through the core, the casing comprising an insulating head or diaphragm, above the coils and core; a `shaft-bearing member in the insulating head, having an enlarged cavity above the bearing of the Shaft therein forming an oil cup around the shaft; a collar fast on the end of the shaft within the oil cup and extending thereabove; a sleeve comprising at the lower end an interrupter-operating cam, and means for making it fast on said upper end 'of the collar, said sleeve having its cavity e11- larged below its seat on the collar for' revolving it about the oil cup.

7. In a structure such as set outin 115 claim 6 foregoing, the means for making the sleeve faston the collarconsisting in that the collar is taperingly counterbored and split and interiorly threaded at its part which extends above the shaft, and an eX- panding screw screwed into said counterbore.

8,. In a structure `such as set out in claim 6 foregoing, the upper end of the sleeve being non-circular; and adistributer having 125 an aperture for engagingsaid non-circular upper end removably mounted thereon'.

9. In a structure such as set out in claim 6, the sleeve having an exterior angle-shaped flange forming an annular pocket at a plane overhanging the oil pup, and an oil duct nular flange which enters said poeketrand 10 leading from said pocket `for discharge into is adapted to cover the same for preventing the oil cup.. oil being thrown therefrom' in the rotation 10. In a structure such as set out in claim of the shaft. 5 6 foregoing, a distributer mounted upon the iin testimony whereof, l have hereunto set sleeve for rotation therewith, said sleeve havmy hand at Chicago, illinois, this 16th day I5 ingan exterior angle-shaped ange forming of April, 1918. an annular pocket above the oil cup, saioi distributer having at its lower end an an- RUDGLF ROSNER. 

